Dynamo-electric machine or electric motor.



No. 669,6!3. Patented Mar. 12, IQOI. N. C. BASSETT.

DYNAMO ELECTRIC MACHINE 0R ELECTRIC MOTOR.

(Application filml Jan. 18, 1900.]

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(Applicntion filed Jan. 18, 1900. I

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Nrrnn Star NORMAN C. BASSETT, OF LYNN, MASSACHUSETTS, ASSIGNOR TO THEGENERAL ELECTRIC COMPANY, OF NET/V YORK.

DYNAMC-ELECTREC MACHENE CR ELECTREC MOTOR.

SPEGEFICATION forming partof Letters Patent 1210.. 669,613, dated March12, 1901.

Application filed January 18, 1900. Serial No. 1,826. (No model.)

To LLZZ whom it may concern:

Be it known that 1, NORMAN C. BAssnT'r, a citizen of the United States,residin at Lynn, in the county of Essex, State of Massatmusetts, haveinvented certain new and useful Improvements in Dynamo-Electric Machinesor Electric Motors, (Case No. 1,549,) of which the following is aspecification.

The object of this invention is to provide a casing for electricgenerators or electric motors to protect the field-magnet and armatureand other operative parts from damage by shock and to prevent externaldissipation of the magnetic field.

In carrying out the invention 1 provide an inclosing casing for thefield-magn et, armature, and commutator formed of a single casting ofmagnetic material, in which are provided openings into which thearmature and fieldmagnet may be inserted. 1 preferably provide theopening for the introduction of the field-magnet and its spools at thetop of the casing and a lateral opening at the side through which thearmature may be introd need, a hand-hole being provided in the castingby which access may be given to the commutator for adjustment of thebrushes and terminals.

The essential feature of my invention is forming the casing of a singlecasting so arranged that the parts may be easily assembled and thearmature, field-magnet, and commutator housed. For purposes of economyof metal and space the body of the casing which houses the field-magnetand armature is of larger diameter than the housing for the commutator,the latter forming a lateral extension of smaller size than the body andcompletely closed, except for the hand-hole which gives access to thecommutator and its parts and the bearing for the armature-shaft. Theopening through which the armature is introduced into the casing ispreferably made on the opposite end of the casting and is oovered by acup-shaped bearing bolted fast to the casing, in which are suitableprovisions for feeding lubricating material to the shaft.

The novel features of the invention will be hereinafter more fullydescribed and will be definitely indicated in the claims.

In the drawings which illustrate the inven tion, Figure 1 is a sectionalview of an elec tric machine embodying my improvements, and Fig. 2 is anend elevation.

Referring to Fig. 1, 1 represents my improved casing, which is providedwith a large chamber 2 to contain the armature and heldmagnet and at oneside an extension 3 to house the commutator and the leads to thearmature and field-magnet. Openings are provided in the casting, whichis preferably made of a magnetic material, such as cast-steel, of a gooddegree of magnetic permeability. The largest of these openings is at thetop of the casting and is of sufficient size to permit the insertion ofthe field-magnet and its windings from the top. The casting is formed ofa single piece of metal and carries feete 4 forming an integral part ofthe casting. An opening is provided at the bottom, as indicated at 5,into which the core of the field-magnet projects when the parts areassembled. The fieldmagnet is supported in position by metal bars .6 6,passing through the walls of the casing and through the core of thefield-magnet and riveted into the walls of the casing. At one side ofthe casing is an opening 7, sufficiently large in diameter to admit ofthe lateral insertion of the armature. The extension 3, which houses thecommutator, is provided at the top with one or more hand-holes 8, bywhich the connections of the leads from the windings and brushes may bemade with terminals 9 9, etc. These terminals extend through holes boredor cast in the end of the casing, being insulated by bushings ofporcelain or fiber or other good insulating material, which may belocked in place by running Babbitt metal or lead into the joint, asindicated at 10. In the opening 7 is supported a cup-shaped bearing 11,which supports one end of the armature. This bearing is formed of acasting having several internal ridges cored with openings at the lowerpart, as indicated at 12, which ridges form a seat for anantifriction-lining of Babbitt metal or other material, as indicated at13. This may be formed in a single cylindrical piece notched at thecenter and top at a point corresponding to an opening in the casing, in.which a plug 14 is inserted. This permits the introduction of oil to thewell or cellar formed by the bottom of the casting, in which dips a ring15, bearing on the journal and adapted to pick up oil from the cellarand feed it to the journal. The lining may be locked in place by aset-screw 16, passing through the wall of the bearing. On the inside ofthe cupshaped bearing is cast an extension 17, forming a trough to catchthe oil-drip, which may be led through a hole in the side of the castingand caught in a receptacle on the outside of the machine. The top of thebody part of the casing is provided with a removable cover 18,permitting the opening through which the field magnet is inserted to becompletely closed after the parts have been assembled. The commutatorend of the casing is also provided with a cup-shaped casting 19,provided with an antifriction-lining and an oil-feed similar to thatjust described, provided also on the inside with shoulders, forming aseat for a ring, to which is bolted the support 20 for the brush-holder.The lower part of the castings which form the bearings may be tapped andprovided with set-screws 21 22 to permit withdrawal of the oil whennecessary. The opening 5 at the bottom of the casing and the hand holeor holes 8 permit a circulation of air through the casing and preventrise of heat in the machine. The machine is provided with a plurality ofterminals, five of which are indicated, which permit different groupingsof the field-magnet coils to change the speed of the machine.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. A dynamo-electric machine or electric motor having its armature,fieldmagnet and commutator inclosed within a metallic casing formed ofone integral casting having an opening for the introduction of thefield-magnet, and an independent opening for the insertion of thearmature.

. 2. An electric motoror generator, comprising a casing formed of asingle integral casting forming a substantially complete housing for thefield-magnet, armature and commutator, and provided with an opening forthe introduction of the field-magnet.

3. An electric generator or motor, provided with an inclosing casing forthe field-magnet and armature, formed of a single casting, forming ahousing over the field-magnet and armature, and provided with integralsupporting-feet.-

4. An electric motor or generator, provided with a casing for itsfield-magnet, armature and commutator, housing the same, and having anopening at the top for the introduction of the field-magnet, and anopening at the side for the introduction of the armature.

5. An electric generator or motor, provided with a casing to house theoperative parts, formed of a single casting, openings to permit theintroduction of the armature and field-magnet, and supporting-rods forthe latter riveted into the walls of the casing.

6. An electric generator or motor, having a casing for the field-magnetand armature, formed of a single casting provided with openings for theinsertion of the operative parts, an opening in the bottom into whichthe fieldmagnet frame projects, and rods extending through thefield-magnet and secured to the Walls of the casting, for locking thefield-magnet in position.

7. An electric generator or motor, comprising a casing for thefield-magnet and armature, formed of a single casting, having an openingat the top for the introduction of the field-magnet and a removablecover for said opening, an opening at one end for the introduction ofthe armature, a lateral exten sion of the casting at the other endforming an inclosure for the commutator, and handholes in the casting topermit access to the commutator.

8. An electric generator or motor provided with a casing for itsfield-magnet and armature, an opening at the top for inserting thefield-magnet, and cup-bearings at the sides for the armature, theopening covered by one of said bearings being of a size to permitinsertion of the armature.

In witness whereof I have hereunto set my hand this 10th day of January,1900.

NORMAN O. BASSETT.

Witnesses:

DUGALD McKILLoP, HENRY O. WEsTnNnAnP.

